Expandable backpack system

ABSTRACT

Expandable luggage devices are provided. Included within expandable luggage devices is an expandable backpack that is convertible between at least two positions. An uppermost cover portion of the backpack converts to a side or back portion when the backpack is expanded, and a secondary cover portion is withdrawn from an internal area of the device to enclose or cover the backpack in the second position.

This application is a continuation of U.S. patent application Ser. No.14/884,970, filed Oct. 16, 2015, which is a Continuation of U.S. patentapplication Ser. No. 13/847,372, filed Mar. 19, 2013, now U.S. Pat. No.9,596,913, issued Mar. 21, 2017, which claims the benefit of U.S.Provisional Patent Application No. 61/612,757, filed Mar. 19, 2012, theentire disclosures of which are hereby incorporated by reference intheir entireties herein.

FIELD OF THE INVENTION

The present disclosure generally relates to luggage. More specifically,the present disclosure relates to an expandable system for luggageitems, and particularly for backpacks.

SUMMARY OF THE INVENTION

An expansion system for a luggage item, particularly a backpack, isprovided. In various embodiments, the system comprises an enclosuresystem for maintaining and securing items, a zipper or similar fastenerfor providing a temporary seal, and an expansion portion. The expansionportion resides generally within the pack when the pack is in a firstun-expanded state. In a second expanded state, the expansion portionextends upwardly and outwardly from an internal volume of the pack tocreate a second, larger internal volume.

The pack comprises a first upper cover portion in a first, compressedstate. When the pack is expanded from a first internal volume to asecond, larger internal volume, the upper sealing member is movedgenerally outwardly and transitions to an outer-side member. Theexpansion portion is drawn upwardly and a second upper cover portion,previously residing within the first storage volume, is drawn out of thepack and provides cover for an upper portion of the pack in the second,expanded state.

The second upper cover portion, in various embodiments of the presentdisclosure, comprises a portion that is generally not in use when thebag is arranged in a first, compressed state. In preferred embodiments,the second upper cover portion may reside within a first storage volume.In alternative embodiments, the second upper cover portion resides alongan outer side portion of the pack and may be secured thereto by variousfasteners.

Luggage items of the present invention comprise various enclosure andcarrying systems as will be recognized by one of skill in the art. Suchenclosure and carrying systems comprise, for example, zippers, snaps,buckles, cords, adjustable straps, padded, ventilated padding, aplurality of pockets, elastic securing portions, reflective features,etc.

In one embodiment, a luggage device is provided comprising a mainstorage area interchangeable between at least a first and secondposition of use, the first position of use comprising a first internalstorage volume and a second internal storage volume, the first internalstorage volume being less than the second internal storage volume. Aplurality of straps are interconnected to the main storage area forsecuring the device to a user. The first position of use comprises acover portion at least partially formed by a zipper interconnecting afront panel and a rear panel of the device. A secondary cover portionand an expandable sleeve portion are provided and reside substantiallywithin the first internal volume at least when the device is provided inthe first position of use. The second position of use is characterizedin that the secondary cover portion and said expandable sleeve portionare drawn upwardly and external to said first internal storage volume tocreate said second internal volume. The secondary cover portion isinterconnected to the main storage area by at least one adjustableflexible strap member.

The Summary is neither intended nor should it be construed as beingrepresentative of the full extent and scope of the present disclosure.The present disclosure is set forth in various levels of detail in theSummary as well as in the attached drawings and the Detailed Descriptionand no limitation as to the scope of the present disclosure is intendedby either the inclusion or non-inclusion of elements, components, etc.in this Summary. Additional aspects of the present disclosure willbecome more readily apparent from the Detailed Description, particularlywhen taken together with the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute apart of the specification, illustrate embodiments of the disclosure andtogether with the general description of the disclosure given above andthe detailed description of the drawings given below, serve to explainthe principles of the disclosures.

It should be understood that the drawings are not necessarily to scale.In certain instances, details that are not necessary for anunderstanding of the disclosure or that render other details difficultto perceive may have been omitted. It should be understood, of course,that the disclosure is not necessarily limited to the particularembodiments illustrated herein.

FIG. 1 is a perspective view of one embodiment of the luggage item;

FIG. 2 is a perspective view of one embodiment of the luggage item in anopen and collapsed position;

FIG. 3 is a perspective view of one embodiment of the luggage item in anopen and partially expanded position;

FIG. 4 is a perspective view showing certain features of a luggage itemaccording to one embodiment of the present invention;

FIG. 5 is a perspective view showing certain features of a luggage itemaccording to one embodiment of the present invention;

FIG. 6 is a perspective view of one embodiment of the luggage item in aclosed and expanded position;

It should be understood that the drawings are not necessarily to scale.In certain instances, details that are not necessary for anunderstanding of the disclosure or that render other details difficultto perceive may have been omitted. It should be understood, of course,that the disclosure is not necessarily limited to the particularembodiments illustrated herein.

DETAILED DESCRIPTION

While preferred embodiments of the present disclosure comprise expansionsystems for backpacks, it will be expressly recognized that the presentdisclosure is not so limited. Indeed expansion systems and features ofthe present disclosure may be provided in any number of luggage items,including, but not limited to duffels, shoulder bags, messenger bags,satchels, attaches, etc.

As used herein, the terms “compressed” and “expanded” are relative termsand should not be read or interpreted as limiting or as connoting anyparticular arrangement or device other than in their relative sense.

Referring now to FIG. 1, a front perspective view of one embodiment ofthe invention is shown. As depicted, a luggage item comprises a backpack2. The backpack 2 comprises various features 4, including attachmentstraps, compression straps, padded or abrasion-resistive areas, andadjustments. Features may also comprise external pockets 6. Suchfeatures 4, 6 are useful for securing various items to an externalportion of the bag 2, storing items such as water bottles where they areeasy to access, and adjusting the shape or center of gravity of the bag.It will be recognized, however, that the luggage items of the presentdisclosure are not limited to any particular arrangement or number ofsuch features 4. Indeed, items provided in accordance with the presentinvention may comprise any number, type, or arrangement of suchfeatures, or may be provided without such features.

As shown in FIG. 1, the backpack 2 generally comprises side portions 3,5, an upper portion 9, a back portion 10, a bottom portion 12, and a topportion 14. Such portions may also be considered and/or provided aspanels. It will be recognized, however, that as various embodiments ofthe present invention contemplate rounded or integrated bag structures,the backpack 2 is not limited to a design comprising discrete orseparate panels. As shown, the bag 2 is provided in a closed positionwith an internal storage volume contained or closed by a primary zipper8. Primary zipper 8 extends along a top portion of the backpack 2 andalong at least a portion of the side panels 3, 5. In addition toallowing for selective closure of the internal storage area, the zipper8 provides various features and benefits as shown and described herein.

FIG. 2 depicts the backpack 2 in an open position wherein the zipperportion has been separated, revealing first and second zipper portions 8a, 8 b and an internal storage area 16. In addition to providing avolume for storage and carriage of various items, internal storage area16 further comprises means and features for extending the volume oruseable space of the backpack 2. As shown, an expandable sleeve portion18 is provided. As shown in FIGS. 1-2, the expandable sleeve portion 18is provided in a packed or compressed state wherein the sleeve ispositioned downwardly and substantially parallel to the sidewalls of thebackpack 2. In such a position, the compressed or unused sleeve portion18 is in a position of non-use wherein it occupies minimal space yet isavailable for expansion or deployment. The backpack 2 provided in FIGS.1-2 generally comprises a “top-loading” bag. The zipper portion 8extends along a top portion of the bag 2, but also extends verticallyalong both side portions 3, 5 of the backpack 2. Such vertical extensionallows for the upper portion 9 and rear portion 10 to be moved outward,thus expanding the depth of the backpack 2 when the zipper 8 is open.

As shown in FIG. 3, various embodiments of the present inventioncomprise an arcuate zipper 8, wherein the zipper extends verticallyalong at least a portion of the side portions 3, 5, comprises a diagonalportion extending toward the back portion 30, and extends laterallyalong the top portion of the backpack. A lid portion 20 is provided andshown in a packed or compressed state in FIG. 2 and partially deployedin FIG. 3. The lid portion 20, as shown and described in more detailherein, is provided in a position on non-use or storage when thebackpack is in a first compressed state, and capable of being withdrawnand provided as a lid for the backpack when in an expanded state.

FIG. 3 depicts the expandable sleeve portion 18 withdrawn from thecompressed or compacted state. Expandable sleeve portion 18 thusprovides sidewall portion of the backpack in the expanded state. Theexpandable sleeve portion 18 is unrolled, unfolded, and/or stretchedupwardly to form an additional storage volume for the backpack 2. Theupper portion 9, which generally serves as a top cover portion in thecompressed state, is now moved outwardly such that it has beeneffectively converted to a rear side panel or portion. Zipper portion 8a no longer defines the uppermost portion of the bag, but gives way tothe sleeve 18 and cover 20.

Various embodiments of the present invention as shown and describedherein comprise expandable top-loading backpacks expandable between afirst state and a second state. In various embodiments the backpack isexpandable between a first volume of between approximately 30 and 50liters and approximately 51 and 60 liters. In one embodiment, a backpackis provided that is expandable between a first volume of betweenapproximately 40 and 55 liters. It will be expressly recognized,however, that the present invention is not limited to a luggage deviceof a particular initial, compacted, or second, expanded state, or evento a luggage device that comprises two positions of use. Indeed, variousluggage items are contemplated as being of various sizes and expansioncharacteristics. No limitation is provided or implied with respect toparticular device sizes and/or storage volumes.

FIG. 4 is a rear perspective view of the backpack 2 in an expandedposition. The cover 20 or lid for enclosing the pack in an expandedstate is shown. The cover 20 comprises a substantially flexible portionthat has been extended from an interior storage volume of the compactedor partially compacted state. In various embodiments, the cover 20comprises an accessory pocket between sidewalls or panels of the cover20, the accessory pocket being accessible by a zipper 24 or similarenclosing feature. The zipper 24 and associated pocket are accessible oroperable in both compressed and expanded states of the pack 2. The cover20 comprises securing means, shown as straps 26 in FIG. 4 for securingand closing the cover once the cover 20 is extended over the sleeve 18.

As shown in FIG. 4, zipper portion 8 b is visible in a position ofnon-use associated with the expanded position of the pack. In thecompacted or compressed state of FIG. 1, zipper portions 8 a, 8 b aresecured and generally provided at a top portion of the backpack 2. Inthe expanded state illustrated in FIG. 4, the zipper portions 8 a, 8 bare separated such that they are substantially flush with front and backpanels of the back, thereby allowing for extension of the sleeve 18 andcover 20 and conversion of the backpack 2 into an item with a largerstorage volume.

Shoulder straps 32 are provided on a front portion of the pack 2 forsecuring the backpack 2 to a user. As shown, the shoulder straps 32comprise securing members 22 to adjustably secure the backpack to theuser. When the pack 2 is provided in an expanded state, with the sleeve18 extended upwardly, securing members 22 may be selectivelydisconnected from a first position to a second position, wherein themembers 22 are moved upwardly and secured to the additional height-wisestorage volume to secure the additional storage volume and aid inrestraining the pack and its moment of inertia proximal to a user, thusenhancing comfort, ergonomics and maneuverability.

Upper portions 34 of the securing members 22 are disconnectable from afirst position and securing to loops 36 or similar features. Suchtransition and related adjustments prevent an upper portion of thebackpack 2 from swinging or extending outwardly from a user to anunwieldy or undesired position.

FIGS. 5-6 depict the backpack 2 as provided in an extended, openposition and an extended, closed position, respectively. As shown, thezipper portions 8 a, 8 b are moved outwardly with respect to the compactposition and allow for upward expansion of the sleeve portion 18, whichcreates an additional vertical-oriented storage area and a cover portion20 to enclose the storage volume. As shown in FIG. 5, devices of thepresent invention comprise width or depth-wise expansion, as well asheight-wise expansion. FIG. 5 shows one side portion 3 of the backpack2, wherein the depth of the bag is expanded, at least in part due to thezipper extending down a portion of the side panel 3. Additionalfeatures, such as compression straps, pleats, and similar features areprovided such that a luggage item 2 of the present disclosure isprovided with the ability to expand and contract in at least twodimensions.

Various materials may be utilized in the construction of luggage itemsin accordance with the present invention. No limitation with respect tothe same is expressed. It is contemplated that various rip-stop,waterproof, water-resistant, rubberized, abrasion-resistant, and similarmaterials as well as various combinations thereof be provided. It isfurther contemplated that various combinations of these materials beprovided as may be required. For example, upper portions more likely tobe subjected to precipitation are contemplated as comprising waterresistant or water-proof materials, while lower and/or corner portionsubject to additional stress or impact are provided withabrasion-resistant features.

While various embodiments of the present invention have been describedin detail, it is apparent that modifications and alterations of thoseembodiments will occur to those skilled in the art. It is to beexpressly understood that such modifications and alterations are withinthe scope and spirit of the present disclosure. Further, it is to beunderstood that the phraseology and terminology used herein is for thepurposes of description and should not be regarded as limiting. The useof “including,” “comprising,” or “having” and variations thereof hereinare meant to encompass the items listed thereafter and equivalentsthereof, as well as, additional items.

What is claimed is:
 1. A luggage device selectively positionable betweenat least a first position of use and a second position of use, theluggage device comprising: a first volume and a first cover portionassociated with the first position of use, the first cover portioncomprising a zipper; an expandable sleeve portion provided substantiallywithin the first volume when the device is in the first position of use;the second position of use comprising a second volume larger than thefirst volume, wherein the expandable sleeve portion at least partiallydefines the second internal volume; a second cover portion comprising apanel member having a first end and a second end and at least one strapfor securing and closing the device when the second cover portion isextended over the expandable sleeve portion; and wherein in the firstposition of use, the second cover portion is provided within the firstvolume, and wherein in the second position of use, the second coverportion comprises a cover for enclosing an upper portion of theexpandable sleeve portion.
 2. The device of claim 1, wherein the luggagedevice comprises a backpack.
 3. The device of claim 1, wherein the firstvolume comprises a volume of between approximately 35 and 45 liters, andwherein the second volume comprises a volume of between approximately 50and 60 liters.
 4. The device of claim 1, wherein the first volumecomprises a volume of between approximately 25 and 35 liters, andwherein the second storage volume comprises a volume of betweenapproximately 35 and 45 liters.
 5. The device of claim 1, wherein apanel portion of the luggage device comprises a top panel portion whenthe luggage device is provided in the first position of use and thepanel portion comprises a rear panel portion when the luggage device isprovided in the second position of use.
 6. The device of claim 1,further comprising first and second shoulder straps comprising a firstend and a second end, each of said first ends and said second endsinterconnected to said luggage device.
 7. A luggage device, comprising:a main storage area selectively interchangeable between at least a firstand a second position of use, the first position of use comprising afirst internal storage volume, and the second position of use comprisinga second internal storage volume; the first internal storage volumebeing less than the second internal storage volume; at least one strapinterconnected to the main storage area for securing the device to auser; a first cover portion comprising a zipper interconnecting a frontpanel and a rear panel of the device; a secondary cover portion and anexpandable sleeve portion, the secondary cover portion comprising afirst end and a second end, the secondary cover portion connected to theexpandable sleeve portion; the second position of use characterized inthat said secondary cover portion and said expandable sleeve portion aredrawn upwardly and external to said first internal storage volume; andwherein said secondary cover portion is interconnected to said mainstorage area by at least one strap when the expandable sleeve portion isprovided in the second position of use.
 8. The luggage device of claim7, wherein the luggage device comprises a backpack.
 9. The luggagedevice of claim 7, wherein the first internal storage volume comprises avolume of between approximately 35 and 45 liters, and wherein the secondinternal storage volume comprises a volume of between approximately 50and 60 liters.
 10. The luggage device of claim 7, wherein the firstinternal storage volume comprises a volume of between approximately 25and 35 liters, and wherein the second internal storage volume comprisesa volume of between approximately 35 and 45 liters.
 11. The luggagedevice of claim 7, wherein a panel portion of the luggage devicecomprises a top panel portion when the luggage device is provided in thefirst position of use and the panel portion comprises a rear panelportion when the luggage device is provided in the second position ofuse.
 12. The luggage device of claim 7, further comprising first andsecond shoulder straps comprising a first end and a second end, each ofsaid first ends and said second ends interconnected to said luggagedevice.